Cop-winder



(NoModel.)

- C. P. RITCHEL.

GOP WINDBR.

N07,.'249,4814. PatentedNov.15,1881. i

ATTORNEYS UNITED STATES PATENT OFFICE.

CHARLES F. RITCHEL, OF BEIDGEPORT, CONNECTICUT, ASSIGNOR TO THE WHITE SEWING MACHINE COMPANY, OF CLEVELAND, OHIO.`

COP-WINDER.

SPECIFICATION forming part of Letters Patent No. 249,484,'dated November 15, 1881.

Application led June 23, 1881. (No model.)

To all whom it may concern Be it known that I, CHARLES F. .RITCIIEL, of Bridgeport, in the countyof Fairfield and State of Connecticut, haveinvented certain new and useful Improvementsin Cop-Winders; and I do hereby declare the following to be a full, clear, and exact description of the invention, such asywill enable others skilled in the art to which it pertains to make and use it, reference being had tothe accompanying drawings, which form part of this specification.

My invention relates t0 a device for winding thread in cops for use in sewing-machine shuttles; and it consists in certain features ot' construction and combination of parts, as will lhereinafter bedescribed, and pointed out in the claim.

In the drawings, Figure l is a longitudinal section of my device, showing the` manner of winding the thread and of securing the mandrel inthe chuck..V Fig. 2 is a view showing the case and the manner ot placing the cop therein. Fig. 3 shows the cop-case closed and ready to be placed in the shuttle. Fig. 4 shows another manner ot' forming the mandrel and washer.

A is a mandrel, which is made tapering.

B is a movable washer, .which is made concave on its inner face, and may be provided with a handle, as shown.

a is a spiral spring, which serves to keep the washer B in place against the shoulder on the mandrel A and allow it to -be drawn back when desired.

C isa chuck, which is also made concave on its face, as shown, and by means of which the mandrel A is revolved.

D is the cop-case, which is made cylindrical in shape and formed in two parts, 4which are hinged together at the back.

b b are the ends of the cop-case, and are provided lWith holes in their centers large enough to admit the mandrel A.

The operation of the device is as follows: One end of the mandrel A is secured in the chuckC by means of a thumb-screw or in anyparted to the mandrel Aby means of the chuck C, and the thread fed to the said mandreland Wound into a cop. It will `be noticed that the inner faces of the chuck C, and also" that of the 5 5 movable washer B, are made concave. The reason for this is to make each succeeding coil shorter than the one below it, and thus prevent the ends ot the cop from falling apart when their support is removed,as they would 6o be apt to do were the coils of the same length. After the thread is wound the mandrel is removed from the chuck C, and the movable washer B is pulled back, as shown in Fig. 2, and the cop placed within .the case D, leaving the inner end of theV thread projecting out through the hole' in the center of theend b. The case is now closed, and the mandrel, being of a tapering form, is easily removed from the center of the cop without disturbing the 7o thread. The front ot' the cop-case is provided with a slot which allows the outer cud of thc thread to project, and prevents this end from entangling when the thread is almost all run out. Thus the thread, being drawn from the center through the hole in the end b ot' the copcase, is fed as it is needed, and the -necessity of a bobbin is obviated.

When it is desired to use thecop without the case the washerB may be made in such a 8o manner that the mandrel A will pass through it, thus leaving said washer B to support the end of the cop while the mandrel is being withdrawn. This washer may lie-fastened to the mandrel by means ot' a thumb-screw, as 85 shown in Fig. 4, orin any other suitable manner. i

The combination, with the mandrel A, movable washer B, having a concave face, and 9o means for holding said washer in place on the mandrel, of the chuck C, having a concave face, the said concave faces of the washer and chuck being arranged to impart conve-x ends to the cop, substantially as set forth.

In testimony whereof I have signed my name to this specification 4in the presence of two subscribing witnesses.

CHARLES FRANCIS RITCHEL.

Witnesses WILLIS N. BRoNsoN, DWIGHT. H. TERRY. 

